Jeff Geerling
@jeffgeerling.com
Father, author, developer, maker. Sometimes called "an inflammatory enigma". #stl #ansible #k8s #raspberrypi #mac #crohns www.jeffgeerling.com
For the last video of the year, I tested Dell's "Dell Pro Max with GB10" (rolls right off the tongue, that).
Dell sent two and mentioned they aren't gaming boxes, so maybe don't focus on that in a review. So guess what I did first ;)
www.youtube.com/watch?v=FjRK...
Dell sent two and mentioned they aren't gaming boxes, so maybe don't focus on that in a review. So guess what I did first ;)
www.youtube.com/watch?v=FjRK...
December 26, 2025 at 3:03 PM
For the last video of the year, I tested Dell's "Dell Pro Max with GB10" (rolls right off the tongue, that).
Dell sent two and mentioned they aren't gaming boxes, so maybe don't focus on that in a review. So guess what I did first ;)
www.youtube.com/watch?v=FjRK...
Dell sent two and mentioned they aren't gaming boxes, so maybe don't focus on that in a review. So guess what I did first ;)
www.youtube.com/watch?v=FjRK...
Bluey performed admirably, but I think was enjoying a little time alone on the kitchen floor, away from the mayhem.
December 26, 2025 at 3:36 AM
Bluey performed admirably, but I think was enjoying a little time alone on the kitchen floor, away from the mayhem.
Here's the wash cycle of my broken Bosch 500 series dishwasher.
It's fixed now (pump was making grinding noises and was very weak), but this is like strike 7 for this dumb appliance.
Might have to make another video about it sometime.
It's fixed now (pump was making grinding noises and was very weak), but this is like strike 7 for this dumb appliance.
Might have to make another video about it sometime.
December 24, 2025 at 6:26 PM
Here's the wash cycle of my broken Bosch 500 series dishwasher.
It's fixed now (pump was making grinding noises and was very weak), but this is like strike 7 for this dumb appliance.
Might have to make another video about it sometime.
It's fixed now (pump was making grinding noises and was very weak), but this is like strike 7 for this dumb appliance.
Might have to make another video about it sometime.
Reposted by Jeff Geerling
to save any of y'all trying the new @jeffgeerling.com super rdma jaccl magic and you only have the thunderbolt 4?
don't bother, you need thunderbolt 5.
however you can still use ring mode though, which as you can see isn't so shabby at 37.9 Gbit/s of old fashioned TCP over thunderbolt 4!
#hpc #ai
don't bother, you need thunderbolt 5.
however you can still use ring mode though, which as you can see isn't so shabby at 37.9 Gbit/s of old fashioned TCP over thunderbolt 4!
#hpc #ai
December 23, 2025 at 4:19 PM
to save any of y'all trying the new @jeffgeerling.com super rdma jaccl magic and you only have the thunderbolt 4?
don't bother, you need thunderbolt 5.
however you can still use ring mode though, which as you can see isn't so shabby at 37.9 Gbit/s of old fashioned TCP over thunderbolt 4!
#hpc #ai
don't bother, you need thunderbolt 5.
however you can still use ring mode though, which as you can see isn't so shabby at 37.9 Gbit/s of old fashioned TCP over thunderbolt 4!
#hpc #ai
Wind storms last week set in motion disaster recovery plans at NIST, and almost took out a primary time reference: www.youtube.com/watch?v=ZRB7...
I'm sure the folks at NIST running the Internet's time clocks were feeling the pressure, and they handled it well.
I'm sure the folks at NIST running the Internet's time clocks were feeling the pressure, and they handled it well.
NIST's NTP clock was microseconds from disaster
YouTube video by Jeff Geerling
www.youtube.com
December 22, 2025 at 4:26 PM
Wind storms last week set in motion disaster recovery plans at NIST, and almost took out a primary time reference: www.youtube.com/watch?v=ZRB7...
I'm sure the folks at NIST running the Internet's time clocks were feeling the pressure, and they handled it well.
I'm sure the folks at NIST running the Internet's time clocks were feeling the pressure, and they handled it well.
Thanks to WLAN Pi for shipping a couple of their WLAN Pi Go units for testing — a CM4-based mobile WiFi analysis tool. Over on Geerling Engineering, here's our take: www.youtube.com/watch?v=JYdV...
We spy on your WiFi with this little Pi
YouTube video by Geerling Engineering
www.youtube.com
December 22, 2025 at 3:19 PM
Thanks to WLAN Pi for shipping a couple of their WLAN Pi Go units for testing — a CM4-based mobile WiFi analysis tool. Over on Geerling Engineering, here's our take: www.youtube.com/watch?v=JYdV...
FYI the time was only ever off by 5μs, so they kept the NTP servers running, thanks to some heroics by staff who remained onsite during the wind storms.
Still have to deal with the clock drift, but seems like crisis averted for now! groups.google.com/a/list.nist....
Still have to deal with the clock drift, but seems like crisis averted for now! groups.google.com/a/list.nist....
December 22, 2025 at 3:12 AM
FYI the time was only ever off by 5μs, so they kept the NTP servers running, thanks to some heroics by staff who remained onsite during the wind storms.
Still have to deal with the clock drift, but seems like crisis averted for now! groups.google.com/a/list.nist....
Still have to deal with the clock drift, but seems like crisis averted for now! groups.google.com/a/list.nist....
Working on PTP, NTP, GPS, PPS, and Sync-E support on the Switchberry with a couple other timing-folk at Time Appliances; today's task was assembling the 3D printed case for the first time (design by JaredC01, who's been a great help!) www.youtube.com/watch?v=BWii...
Putting together the first Switchberry (a managed PTP switch)
YouTube video by Level 2 Jeff
www.youtube.com
December 22, 2025 at 12:06 AM
Working on PTP, NTP, GPS, PPS, and Sync-E support on the Switchberry with a couple other timing-folk at Time Appliances; today's task was assembling the 3D printed case for the first time (design by JaredC01, who's been a great help!) www.youtube.com/watch?v=BWii...
Now's a good time to mention this neat little box I've been helping with...
It's not yet ready for prime time, but we have GPS, PPS, and NTP, working on SyncE
It's not yet ready for prime time, but we have GPS, PPS, and NTP, working on SyncE
December 20, 2025 at 8:33 PM
Now's a good time to mention this neat little box I've been helping with...
It's not yet ready for prime time, but we have GPS, PPS, and NTP, working on SyncE
It's not yet ready for prime time, but we have GPS, PPS, and NTP, working on SyncE
2 GPUs 1 Pi
What I found surprised me. This isn't as insane as you think it is...
youtube.com/watch?v=8X2Y...
What I found surprised me. This isn't as insane as you think it is...
youtube.com/watch?v=8X2Y...
December 20, 2025 at 3:02 PM
2 GPUs 1 Pi
What I found surprised me. This isn't as insane as you think it is...
youtube.com/watch?v=8X2Y...
What I found surprised me. This isn't as insane as you think it is...
youtube.com/watch?v=8X2Y...
A good time to check on holdover clock, and maybe consider running your own NTP infrastructure in house, so you can easily switch references when needed.
We're gonna be leaning on @jeffgeerling.com for accurate time in 2026 at this rate.
Due to a windstorm-related utility power outage at the NIST, time may soon be destroyed
December 20, 2025 at 2:22 PM
A good time to check on holdover clock, and maybe consider running your own NTP infrastructure in house, so you can easily switch references when needed.
I'm testing 1.5 TB of VRAM on a cluster of Mac Studios, courtesy of RDMA support in macOS 26.2, and Exo Labs' new version of Exo (released under the OSS Apache 2.0 license today).
December 18, 2025 at 2:03 PM
I'm testing 1.5 TB of VRAM on a cluster of Mac Studios, courtesy of RDMA support in macOS 26.2, and Exo Labs' new version of Exo (released under the OSS Apache 2.0 license today).
Hello Phoenix I am in you
December 17, 2025 at 9:04 PM
Hello Phoenix I am in you
The CM0 is a Pi Zero 2 W, except in stamp form, with castellated edges, so it's easier to pick and place and solder to another PCB.
It's only being sold in China currently, for integration into OEM products.
It's only being sold in China currently, for integration into OEM products.
December 12, 2025 at 3:15 PM
The CM0 is a Pi Zero 2 W, except in stamp form, with castellated edges, so it's easier to pick and place and solder to another PCB.
It's only being sold in China currently, for integration into OEM products.
It's only being sold in China currently, for integration into OEM products.
Now that Nvidia GPUs run on the Raspberry Pi, I want to see if they're good for Jellyfin transcoding (e.g. take your old 3060 and throw it on a Pi for a little #homelab media server...). www.jeffgeerling.com/blog/2025/be...
December 11, 2025 at 10:07 PM
Now that Nvidia GPUs run on the Raspberry Pi, I want to see if they're good for Jellyfin transcoding (e.g. take your old 3060 and throw it on a Pi for a little #homelab media server...). www.jeffgeerling.com/blog/2025/be...
TIL (after being forced to use a mouse for a bit) you can hold Shift to scroll horizontally with a mouse scroll wheel in any application on macOS. Who knew?!
December 11, 2025 at 4:34 AM
TIL (after being forced to use a mouse for a bit) you can hold Shift to scroll horizontally with a mouse scroll wheel in any application on macOS. Who knew?!
Hello there, Raspberry Pi CM0. EDAtec sent this to me from China. Unfortunately you can't get these anywhere else! It's basically a Pi Zero 2 W, but in SoM form. And it has castellated edges so it can be pick 'n placed right onto PCBs.
December 10, 2025 at 3:22 AM
Hello there, Raspberry Pi CM0. EDAtec sent this to me from China. Unfortunately you can't get these anywhere else! It's basically a Pi Zero 2 W, but in SoM form. And it has castellated edges so it can be pick 'n placed right onto PCBs.
Over on Geerling Engineering, I got a 40+ year veteran radio engineer (my Dad!) to review WSQK, the fictional radio station in Stranger Things season 5. Video here: www.youtube.com/watch?v=wMw_...
Radio Engineers React to Stranger Things WSQK
YouTube video by Geerling Engineering
www.youtube.com
December 9, 2025 at 10:10 PM
Over on Geerling Engineering, I got a 40+ year veteran radio engineer (my Dad!) to review WSQK, the fictional radio station in Stranger Things season 5. Video here: www.youtube.com/watch?v=wMw_...
This is gonna sound a little strange, but is polyimide tape safe for someone to have on their tongue for a little bit of time? Hypothetically, I mean.
This hypothetical scenario doesn't involve swallowing the polyimide, of course.
This hypothetical scenario doesn't involve swallowing the polyimide, of course.
December 9, 2025 at 9:55 PM
This is gonna sound a little strange, but is polyimide tape safe for someone to have on their tongue for a little bit of time? Hypothetically, I mean.
This hypothetical scenario doesn't involve swallowing the polyimide, of course.
This hypothetical scenario doesn't involve swallowing the polyimide, of course.
Aww, I was hoping the more artsy thumbs would win. At least with the initial video audience, it looks like me in the thumbnail helps.
I may re-run the test again next week, once the video's out in 'general' recommendations, and the main audience has already seen it
I may re-run the test again next week, once the video's out in 'general' recommendations, and the main audience has already seen it
December 9, 2025 at 3:49 PM
Aww, I was hoping the more artsy thumbs would win. At least with the initial video audience, it looks like me in the thumbnail helps.
I may re-run the test again next week, once the video's out in 'general' recommendations, and the main audience has already seen it
I may re-run the test again next week, once the video's out in 'general' recommendations, and the main audience has already seen it
About that 'hidden' microphone on Sipeed's NanoKVM... www.youtube.com/watch?v=RSUq...
The 'hidden' microphone inside the NanoKVM
YouTube video by Level 2 Jeff
www.youtube.com
December 9, 2025 at 3:34 AM
About that 'hidden' microphone on Sipeed's NanoKVM... www.youtube.com/watch?v=RSUq...
The DC-ROMA II is not a Framework 13... but it is. But you shouldn't buy it—unless you're a RISC-V developer or enthusiast, I guess. It's complicated: www.youtube.com/watch?v=OkFf...
December 8, 2025 at 3:57 PM
The DC-ROMA II is not a Framework 13... but it is. But you shouldn't buy it—unless you're a RISC-V developer or enthusiast, I guess. It's complicated: www.youtube.com/watch?v=OkFf...
Reposted by Jeff Geerling
I propose a solution to our ongoing RAM shortage:
December 6, 2025 at 2:32 AM
I propose a solution to our ongoing RAM shortage:
One thing holding me back from adopting a mechanical keyboard was the lack of Touch ID.
I fixed that problem and documented the whole process in this video: www.youtube.com/watch?v=tzB6...
But now, I wonder: why doesn't Apple sell an external Touch ID sensor?
I fixed that problem and documented the whole process in this video: www.youtube.com/watch?v=tzB6...
But now, I wonder: why doesn't Apple sell an external Touch ID sensor?
Why doesn't Apple make this?
YouTube video by Level 2 Jeff
www.youtube.com
December 3, 2025 at 10:20 PM
One thing holding me back from adopting a mechanical keyboard was the lack of Touch ID.
I fixed that problem and documented the whole process in this video: www.youtube.com/watch?v=tzB6...
But now, I wonder: why doesn't Apple sell an external Touch ID sensor?
I fixed that problem and documented the whole process in this video: www.youtube.com/watch?v=tzB6...
But now, I wonder: why doesn't Apple sell an external Touch ID sensor?